. Author manuscript; available in PMC: 2016 May 1.

Published in final edited form as: Exp Clin Psychopharmacol. 2016 Feb;24(1):30–37. doi: 10.1037/pha0000059

Table 3.

Overall GLM model of delay discounting with selected covariates (i.e., education, income, gender, treatment seeking status, and delay discounting version) and substance use profiles.

Variable	df	F-value	p-value
Cigarette smoking	1	4.03	0.0451
Alcohol dependence	1	2.3	0.1297
Cocaine dependence	1	13.04	0.0003
Cigarette smoking and alcohol dependence	1	0.18	0.6722
Cigarette smoking and cocaine dependence	1	0.56	0.4555
Alcohol and cocaine dependence	1	10.3	0.0014
Cigarette smoking, alcohol and cocaine dependence	1	1.46	0.2278
Years of education	1	27.31	<.0001
Treatment seeking status	1	0.46	0.4974
Delay discounting version	4	6.81	<.0001